Check out this awesome talk hosted by the Smithsonian Institute on Filipino Martial Arts (FMA). It features Guro Dan Inosanto doing some amazingly smooth empty-hand and weapons demonstrations, as well as discussions with other experts on the history of Filipino boxers including Pancho Villa and Flash Elorde.
A very comprehensive primer on FMA covering everything from theory, to history, to practice.
For more in the same vein, you can watch a free webcast of the documentary film, The Great Pinoy Boxing Era, hosted here by My Barong.
Hat-tip to James, thanks for the links.